diff --git a/hosts/kim/configuration.nix b/hosts/kim/configuration.nix
index 92092a0..f820793 100644
--- a/hosts/kim/configuration.nix
+++ b/hosts/kim/configuration.nix
@@ -12,6 +12,14 @@
       inputs.home-manager.nixosModules.default
     ];
 
+  nix.settings.extra-substituters = [
+    "https://cache.lix.systems"
+  ];
+
+  nix.settings.trusted-public-keys = [
+    "cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o="
+  ];
+
   # Workaround for an issue with docs and Aux
   documentation.nixos.enable = false;